4394279439 has 36 divisors (see below), whose sum is σ = 7012533528. Its totient is φ = 2649551520.

The previous prime is 4394279431. The next prime is 4394279441. The reversal of 4394279439 is 9349724934.

It is a happy number.

It is not a de Polignac number, because 4394279439 - 2³ = 4394279431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4394279431) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 204292 + ... + 224774.

It is an arithmetic number, because the mean of its divisors is an integer number (194792598).

Almost surely, 2^4394279439 is an apocalyptic number.

4394279439 is a deficient number, since it is larger than the sum of its proper divisors (2618254089).

4394279439 is a wasteful number, since it uses less digits than its factorization.

4394279439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20708 (or 20694 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 54.

The square root of 4394279439 is about 66289.3614315299. The cubic root of 4394279439 is about 1637.9320851410.

The spelling of 4394279439 in words is "four billion, three hundred ninety-four million, two hundred seventy-nine thousand, four hundred thirty-nine".